Not being able to come back to my Raw edits at any time in the future is a deal breaker for me. I'm used to ACR/PS, Lightroom, Aperture, and best of all Capture One Pro. Being locked into a total re-edit that Affinity Photo forces me into is a waste of time. I only shoot in Raw, I process in Raw, and I output in various downstream formats as the job requires. Photoshop (without ACR) and Afinity Photo qualify as downstream.